The picture given below is the modern method of irrigation. Which types of crops are recommended to use this method of irrigation? A. Crops grown in soil having shortage of water. B. Crops grown on uneven land or sandy soil
Answers
Answer:
sorry but no picture is given
Answer:
The modern methods of irrigation include – surface irrigation, drip irrigation, sprinkler irrigation, subsurface irrigation.
Explanation:
To choose an irrigation method, the farmer must know the advantages and disadvantages of the various methods. He or she must know which method suits the local conditions best. Unfortunately, in many cases there is no single best solution: all methods have their advantages and disadvantages. Testing of the various methods - under the prevailing local conditions - provides the best basis for a sound choice of irrigation method. This chapter gives some very broad guidance and indicates several important criteria in the selection of a suitable irrigation method.
7.1 Surface, Sprinkler or Drip Irrigation
The suitability of the various irrigation methods, i.e. surface, sprinkler or drip irrigation, depends mainly on the following factors:
- natural conditions
- type of crop
- type of technology
- previous experience with irrigation
- required labour inputs
- costs and benefits.
TYPE OF TECHNOLOGY
The type of technology affects the choice of irrigation method. In general, drip and sprinkler irrigation are technically more complicated methods. The purchase of equipment requires high capital investment per hectare. To maintain the equipment a high level of 'know-how' has to be available,. Also, a regular supply of fuel and spare parts must be maintained which - together with the purchase of equipment - may require foreign currency.
Surface irrigation systems - in particular small-scale schemes - usually require less sophisticated equipment for both construction and maintenance (unless pumps are used). The equipment needed is often easier to maintain and less dependent on the availability of foreign currency.